Subscript puts text below the baseline in Word

Subscript is a formatting tool that moves text below the normal line of writing. In Microsoft Word, you use it for chemical formulas (H₂O), footnote numbers, mathematical expressions, and other technical writing where a character or number needs to sit lower than surrounding text. Word has three ways to apply subscript: a keyboard shortcut, the Format menu, or the ribbon button.

The fastest method is the keyboard shortcut. Select the text you want to subscript, then press Ctrl + = (hold Control and press the equals sign). The text immediately drops below the baseline. Press the same shortcut again to remove subscript formatting.

If you prefer using the menu, select your text, go to the Format menu, choose Text, then click Subscript. In newer versions of Word, you can also find a subscript button on the Home tab in the ribbon — it looks like an "x" with a small number below it.

Key Takeaways

  • The keyboard shortcut Ctrl + = is the fastest way to apply subscript formatting to selected text in Word.
  • Subscript text appears below the baseline and is commonly used in chemistry formulas, mathematics, and technical documentation.
  • You can toggle subscript on and off by pressing the same shortcut twice, or by using the Format menu or ribbon button.
  • Subscript formatting does not change the actual text — it only changes how Word displays it on screen and in print.

Using the keyboard shortcut

The keyboard shortcut is the most direct route. Click or drag to select the character or number you want to make subscript. Then hold down Ctrl and press = (the equals key, not the plus sign). The text will drop below the line immediately.

To remove subscript, select the subscripted text again and press Ctrl + = once more. The formatting toggles off and the text returns to normal position. This works the same way whether you applied subscript through the keyboard, the menu, or the ribbon.

Finding subscript in the ribbon or Format menu

If you do not remember the keyboard shortcut, Word's ribbon and menu both have subscript buttons. In Word 2016 and later, look at the Home tab on the ribbon. In the Font group, you will see a button that looks like an "x" with a small number positioned below and to the right. That is the subscript button. Click it to apply subscript to selected text.

In older versions of Word or if you prefer the menu, select your text, click Format at the top, then choose Text and Subscript. The menu path varies slightly between Word versions, but the option is always under Format.

When to use subscript versus superscript

Subscript moves text below the baseline. Superscript moves text above the baseline. They are opposite directions. Use subscript for chemical formulas (H₂O, CO₂), mathematical subscripts (x₁, x₂), and footnote anchors in some styles. Use superscript for exponents (x²), trademark symbols (™), and footnote numbers in other styles.

The keyboard shortcut for superscript is Ctrl + Shift + = (Control, Shift, and equals together). The ribbon button for superscript is next to the subscript button and looks like an "x" with a small number above it. Choose whichever direction your document needs.

Subscript in tables and text boxes

Subscript works the same way inside tables and text boxes as it does in regular document text. Select the text you want to subscript, press Ctrl + =, and it formats immediately. This is useful when you are building a table with chemical data or mathematical notation and need consistent formatting throughout.

If you are copying text that already has subscript formatting from another document or source, Word will usually preserve the subscript when you paste it. If the formatting does not carry over, select the pasted text and apply subscript again using any of the three methods.

Subscript size and appearance

When you apply subscript in Word, the text automatically becomes smaller and moves below the baseline. You cannot control the size reduction or the exact distance below the line through the subscript button itself — Word uses a standard reduction. For most documents, this default size works well and matches professional formatting standards.

If you need more control over the exact position or size, you can manually adjust the text. Select the subscripted text, then use the Font Size dropdown to make it larger or smaller, and use the Position option under Format > Text to move it up or down by a specific number of points. This is rarely necessary for standard subscript use.

Frequently Asked Questions

What is the difference between subscript and subscript text in Word?

There is no difference — "subscript" and "subscript text" mean the same thing. Both refer to text that appears below the baseline. Word has one subscript feature, accessed through the keyboard shortcut, the Format menu, or the ribbon button.

Can I make subscript text a different color?

Yes. Select the subscripted text, then use the Font Color tool on the Home tab or in the Format menu to change its color. The subscript formatting stays in place while the color changes. This is useful when you want subscript text to stand out or match a color scheme in your document.

Does subscript formatting stay if I copy and paste the text?

Usually yes, but it depends on how you paste. If you use Paste Special and choose "Unformatted Text," the subscript will be removed. If you use regular Paste or Paste Special with "Formatted Text," the subscript formatting carries over to the new location.

Can I undo subscript formatting?

Yes. Press Ctrl + Z immediately after applying subscript to undo it, or select the subscripted text and press Ctrl + = again to toggle the formatting off. Both methods work equally well.